Air-tight stove



2 Sheets-*Sheet 1. T. M. JONES.

Heating Stove. No. 2,218. Patented Aug. 11, 1841.

' 2 Sheets Sheet 2.

T. M. JONES.

Heating Stove.

Patented Aug. 11, 1841.

STATES PATENT OFFICE.

THOMAS M. JONES, OF BOSTON, MASSACHUSETTS.

AIR-TIGHT STOVE.

Specification of Letters Patent No. 2,218, dated August 11, 1841.

To all whom it may concern;

Be it known that I, THOMAS MORTO Jones, of the city of Boston and Stateof Massachusetts, have invented new and useful Improvements in Stoves;and I do hereby declare that the following is a full and exactdescription.

part of it may be varied at pleasure so that care be taken toadjust itaccurately to the stand which supports it but as thecylindrii cal formis one of the most convenient and useful I proceed to describe myimprovements on stoves of that shape from which description stoves whichhave any other shape required may mutatz's mutrmdz's be 1 readilyunderstood and manufactured.

Patent Ofiice.

sions of the model make a cheap working stove containing theimprovements which I claim and which I proceed to describe.

Figure X is a vertical section through the center of the vesselcontaining the fuel and having a pipe in its top to carry off the gasesThe bottom of the vessel must be adjusted on the stand over the firebars. Z6 is a plan of the stand with fire In the side of of combustion,

bars in the middle of it. the vessel aperture is made varying 1n itssize and shape according to the greater 1 or less surface of fuel thatit may be wished to expose occasionally to the open air and to seeduring its combustion. Around this vessel and under the aperture thereis a ring 1 or bracket fastened. Upon the inner vessel I is placed acovering having any suitable plane or curve surface or forming ifpreferred a section of such surface which covering in order to avoidunnecessary repetitions I shall describe as a circular case open at thebottom whose lower edge rests in the ring or bracket and whose top maybe of any desired shape and pierced so as to pass over the pipe 5 whichis in the top of the inner vessel X. In the side of this outermost casean aperture should be made suitable in size and shape to the aperture inthe side of the lnner vessel and so that it may be placed when in theside of the outermost case may be bracket 0;,

The part of the stove which contains the 1 fuel may be made of metal orof refractory Q stone or fire clay. The form of the lower ornamented byvarying its outline in any way or by covering portions of it with openfancy work. S'

Fig. W is a vertical section of the outer covering having half theheight of the inner vessel X and resting upon the ring or a. Figure V isa vertical section of the outer covering having three fourths of theheight or length of the inner vessel and resting upon the ring orbracket a, a,

Fig. T is a vertical section of the outer covering having as greatheight or length as the inner vessel X. From the inspection of Figs, Vand T which are vertical sections and S R and which are perspectivedrawings of the external appearance .of the stoves of which IV V and Tare vertical sec tions through the center it will ,be at once obviousthat the length or height of the outer covering as well as the form andsize of the aperture may be made like its external appearance to varyaccording to the taste of those who may construct the stove. In Fig. theexternal and internal 2. er-

tures are entirely open-in R the external hexagonal aperture partlycovers the ins ternal one and in a higher inner aperture of another formis also represented closed. A thirdor fourth partial or entire coveringor any greater number may be inter or super posed and may be passed ornot over the pipe 5 at the top of the internal vessel X with or withouta ring or bracket to support the bottom edge but for ordinary purposesone inner and one outer vessel will be sufiicient without interposing athird plane or curve surface. As the distance between the inner vessel Xand the outer covering may be modified at pleasure the outer one may ifwanted be made of glass or china or of metallic and other substanceswith their surfaces highly japanned or enameled in .one or more colors.

Cylinders placed within each .other and resting on a" grooved bottomplate or box so that the innermost may serve as a chamber of combustionand for the escape of the products thereof I do not claim, nor do Iclaim the admission of external air by a tube regulated by a valvebeneath the fire chamber with a contrivance for regulating the supply ofhot air by means of openings in the external cylinder to be closed atpleasure by means of an inner cylinder or sliding plate. The difi'erencebetween my stoves and those of the common construction is that as partlymine are not cylinders and could not be made to act if they werecylinders; they have no tube regulated by a valve beneath the firechamber for the admission of external air and no contrivance forregulating the supply of hot air by means of openings in the externalcylinder to be closed at pleasure by means of an inner cylinder orsliding plate. When my stoves are of a cylindrical form which as beforestated is one of the most convenient and useful care must be taken notto allow the side or height of the cylinder to be unbroken andcontinuous, for unless an aperture be made in the side of the vesselwhich contains the fuel and a corresponding aperture made in the side ofthe revolving cases which covers the stationary case containing the fuelmy stoves could not be made to act. not be cylinders nor hollow prismsof uniform and continuous sides. Whatever be their form their sides mustbe broken or interrupted as my stoves can receive their charge of fuelonly through those lateral apertures. Tubes regulated by a valve beneath the fire chamber for the admission of external air are notrequired in constructing my stoves which are supplied with air frombelow the fire bars in the usual manner and which may have the duesupply of air regulated by any of the dampers above or below the firebars commonly employed in stoves for that purpose. No contrivance forregulating the supply of hot air by means of openings in the externalcylinder or any other means is necessary in constructing my stoves noras already stated is any claimed.

What I claim as my invention is A stove without doors having an internalvessel with a lateral opening for the admission of fuel connected with amovable or revolving external cage that covers the whole or any requiredportion of the internal vessel, which external case has a lateralaperture corresponding to that of the inner vessel and is so adjustablethat as it revolves more or less it may shut off either the whole ornone or any part of the lateral opening of the internal vessel.

I now beg leave to add some details and recommendations respecting thestoves which though not necessary to any one skilled in the art of stovemaking may be useful to others. Where grooves are-used in the bottomplate they should be about The stoves must an inch deep and it will befound convenient to make the fire bars movable. Z is a grooved bottomplate with the fire bars in its center and Z is a drawing of a similarbottom plate in which the fire bars are removed. By making the fire barsmovable the facility of clearing the stoves is much increased though thesame effect might be produced if it be wished to have the fire barsstationary by making small holes in the lower part of the sides of thevessel containing the fuel and by various other ways too obvious to needfurther description. The bottom plate may rest upon two or more commonbricks or if preferred upon a hollow box of any desired form, circularas shown in plan Y or hexagonal as shown in plan Y. An ascending smokeflue will be found more desirable than a descending flue but if adescending flue be preferred and hollow boxes be used to support thebottom plate the plate if square may be left open at 2 as shown in planZ in which the fire bars are numbered 4. Y are plans of square circularand hexagonal hollow boxes in which 1 shows the place under the firebars divided off from 2 the smoke passage leading to 3 the escape pipeinto the chimney. If the stoves be used for culinary purposes the formof the bottom plate may be varied ad infinitum according to the taste orcaprice of others. Bars divided like the drawing P will be found toanswer sufiiciently well for all ordinary purposes.

Drawing S shows a stove in which the pentagonal apertures of theexternal case and inner chamber are both uncovered. Through theseapertures the stove is charged with fuel; they are left open when a slowcombustion is required; shut completely when intense heat is wanted andclosed more or less according to the rapidity with which it is wished toconsume the fuel. When the apertures are hexagonal and of about eightinches diameter in stoves of two feet high and 12 or 14: inches wide itwill be found in practice that a very steady combustion will bemaintained if the hexagonal apertures be closed over each other so as tohave the diamond opening shown in the drawing of a stove marked R.

T. MORTON JONES.

Witnesses:

JABEZ MoRRIs, WM. R. PALMER.

